* {
    box-sizing: border-box;
}

body{
    margin: 0;
    height: 100vh;
    width: 100vm;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-family: 'Lato',sans-serif;
    font-weight: 300;
    background-image: url('背景.jpg');
    opacity: 0.6;
}

.login-div{
    filter: blur(0.4px);
    width:460px;
    height: 700px;
    padding: 60px 35px 35px 35px;
    border-radius: 10px;
    background: radial-gradient(circle,#2c2828,#14084b,#0b082b,#110d0d,#020ead);
    box-shadow: 
    0px 20px 20px rgba(0,0,0,0.2),
    0px 5px 10px rgba(0,0,0,0.2),
    0px 70px 50px rgba(0,0,0,0.4),
    30px 50px 50px rgba(0,0,0,0.2),
    -30px 50px 50px rgba(0,0,0,0.2),
    inset 20px 0px 60px rgba(0,0,0,0.1),
    inset -20px 0px 60px rgba(0,0,0,0.1);
}

.login{
    background-image: url('哔哩哔哩.png');
    background-size: cover;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 0 auto;
    box-shadow: 1px 1px 2px rgba(0,0,0,0.1);
}

.title{
    text-align: center;
    font-size: 28px;
    padding-top: 24px;
    letter-spacing: 0.5px;
}

.sub-title{
    text-align: center;
    font-size: 15px;
    padding-top: 7px;
    letter-spacing: 3px;
    text-transform: uppercase;
    font-weight: bold;
}

.fields{
    width: 100%;
    padding:100px 5px 30px 5px;
}

.fields input{
    border: none;
    outline: none;
    background: none;
    font-size: 18px;
    font-family: 'Lato',sans-serif;
    color: white;
    padding: 10px 10px 10px 5px;
}

.username,.password{
    display: block;
    border-bottom: 1px solid #b3b3b3;
    margin-bottom: 30px;
}

::placeholder{
    color:#fff;
    opacity: 1;
    font-size: 20px;
    font-weight: 300;
}

::-ms-input-placeholder{
    color:#fff;
    font-size: 20px;
    font-weight: 300;
}

.signin-button{
    outline: none;
    border: none;
    cursor:pointer;
    width: 100%;
    height: 60px;
    border-radius: 5px;
    font-size: 22px;
    font-family: 'Lato',sans-serif;
    color: #fff;
    text-align: center;
    letter-spacing: 1px;
    background: radial-gradient(circle,#24cfaa,#26c5a3,#28bb9c,#29b294,#2ad88d);
    box-shadow: 1px 1px 2px rgba(0,0,0,0.1);
}

.signin-button:hover{
    background: radial-gradient(circle,#2fdbb6,#32d6b3,#32c9a8,#36c7a7,#38bb9f);
}

.signin-button:active{
    background: radial-gradient(circle,#1da88a,#1ea084,#229c82,#23947b,#238d76);
}

.link{
    padding-top: 20px;
    text-align: center;
}

.link a{
    text-decoration: none;
    color: #fff;
    font-size: 20px;
}

.fields svg{
    height: 22px;
    margin-bottom: -3px;
    margin-right: 10px;
}